Robben Manufacturing has the following two possible projects. The required return is 10 percent. Year Project Y Project Z 0 28,300 -63,000 15,500 34,000 13,500 32,000 14,300 12,700 15,100 10,700 a. What is the profitability index for each project? (Do not round intermediate calculations and round your answers to 3 decimal places, e.g., 32.161.) Profitability index Project Y Project Z b. What is the NPV for each project? (Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) NPV Project Y Project Z c. Which, if either, of the projects should the company accept? (Click to select